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☆☆☆☆☆Cards in this guide (9)
What factor determines the pitch of a sound
Pitch is determined by sound wave frequency; how fast something is vibrating. High-pitched sounds are higher frequency meaning they are vibrating faster. Low pitch means they are vibrating slower.
Which type of modification of radio waves sends signals the farthest
amplitude modulation
What is the term for the small packets of energy emitted from light
Photons
Which term describes substances that absorb some wavelengths of light
pigments
Which of these is associated with a sound's loudness
Loudness is affected by parameters other than sound pressure, including frequency and duration. also sound wave amplitude
Which of the following is true of microwaves
microwaves are used in radar
What type of volcano produced the caldera that covers most of Yellowstone National Park
The Yellowstone volcano is usually called a supervolcano.
What type of device is used to increase or decrease the voltage of an electric current
The device is called a "variac' and it is a type of transformer. It has a variable voltage ouput.
True or false radio waves are electromagnetic waves
true
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